Boosting signal length of an FM transmitter

Thread Starter

hantznk

Joined Mar 18, 2019
3
I have an FM transmitter I purchased a while back (Car And Driver 4057 Bluetooth FM Transmitter), and I've been wanting to boost the signal length but I'm not really sure as to how, right now it transmits maybe ~5-6ft and I'd like it to transmit 10-15 maybe even 20-30ft to overcome any interference. I've found a test report that is pretty helpful, but I'm not sure as to how I'd extend its signal length.

Test report: https://fccid.io/2AMSOCAD-4057/Test-Report/Test-report-3886714
PCB images: https://fccid.io/2AMSOCAD-4057/Internal-Photos/Internal-photo-3886708
 

SLK001

Joined Nov 29, 2011
1,548
I think he means "increase the signal strength".

Your best bet would be to make sure the antennas are in an area where they can effectively "see" the signal. Unless you're skilled at modifying microelectronics, the antenna is probably where you want to put your efforts.
 

Yaakov

Joined Jan 27, 2019
1,612
In the ham radio community it is antennas before amplifiers.
From the photos, the transmit antenna on that thing is just the positive lead in the power cable. It makes me wonder if the negative is the same as RF ground, which is running alongside it in the jacket. It might help just to add a wire outside the jacket not coaxial with the negative.
 

Thread Starter

hantznk

Joined Mar 18, 2019
3
From the photos, the transmit antenna on that thing is just the positive lead in the power cable. It makes me wonder if the negative is the same as RF ground, which is running alongside it in the jacket. It might help just to add a wire outside the jacket not coaxial with the negative.
I see, so this would be the antenna?

I was confused because I was wondering if this was the antenna
 
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